704 OLIGOCHAETA 



owing to the generally marked colour of the worm, and its habit, alluded to by 

 HoFFMEisTEK and d'Udekem, of bending into a circle when touched. Anatomically, 

 it differs by the presence of three spermathecae. In A. neglecta (later regarded by 

 Rosa as merely a variety) there are four or five pairs of tubercula on xxxi-xxxv. 



(9) AUolobophora complanata (Duges). 



Iiumbricus eomplanatus, Dueiis, Ann. Sci. Nat., xv, 1828, p. 29a. 



A. complanata, Eosa, Lumbr. Piemont., 1884, p. 40. 



L. (Dendrobaena) eomplanatus, Vaillant, Annelds, p. 117. 



A. (Octolasion) complanata, RosA, Boll. Mus, Zool. Torino, 1893, No. 160, p. 9. 



Deflnition. Length, 180 mm.; diameter, 10 mm.; number of segments, 190. Clitellwm, 

 XXFIII-XXXFII. Setae distant, the intervals diminishing from below upwards. First 

 dorsal pore, XT/XIII. Tubercula pubertatis in the form of two lines on clitellar 

 segments. Spermathecae, seven pairs in VI-XII. Hab. — Mediterranean district (including 

 Falestine and Algeria). 



The above definition has been taken from Rosa's description of the species, 

 excepting only as regards the first dorsal pore, which Rosa found to be between 

 segments xiii/xiv, a little behind the position assigned to it by Ude. The anatomy 

 of this worm has been investigated by DuGiis, Rosa (19), Ude (3), and by 

 myself (13). The spermathecae lie often partly in one segment and partly in the 

 following or the preceding segment, as was first pointed out by myself; this 

 character, however, is mentioned neither by,DuGi:s nor RosA; Mighaelsen has 

 found a similar state of affairs in A. studiosa. The sperm-sacs, are remarkably inter- 

 mediate in character between those of the typical AUolobophora on the one hand, 

 and those of a Luvibricus on the other. 



(10) AUolobopliora norvegica, Eisen. 



A. norvegica, Eisen, Ofv. Svensk. Akad., 1873, No. 8, p. 48. 

 Lumbrieus norvegicus, Levinsen, Vid. Med., 1883, p. 243. 

 L. (AUolobophora) norvegicus, Vaillant, Annel^s, p. 143. 



Definition. Length, about 100 mm.; number of segments, 120. Setae strictly paired. 

 Clitellum, XXVI-XXXIL Tubercula pubertatis on XXriII, XXIX, XXX, XXXI. 

 Hab. — Norway. 



